These were: the  Orange Free State, centered around the Orange River, and the Transvaal Republic, beyond the  River Vaal.

这些是：奥兰为中心的自，及位于瓦尔北的德兰士瓦共国。

Should we be offended that Lisa insisted on referring to the Vaal Fowls as

我们应该对丽莎坚持将Vaal Fowls称为到不满吗？

Like European-American settlers, they set out in tented wagons to establish new settlements in the fertile northeastern regions of the Orange and Vaal Rivers.

像欧洲裔美国定居者一样，他们乘坐帐篷马车出发，在奥兰瓦尔肥沃的东北部地区建立新的定居点。

The Great Trek led the Boers to the northeastern regions of the Orange and Vaal Rivers, beyond the control of British colonial administration.

伟大的跋涉将布尔人带到了奥兰瓦尔的东北部地区，不受英国殖民政府的控制。